3-4
Cisco Catalyst 4900M Switch Installation Guide
78-18350-02
Chapter 3 Installing the Switch
Rack-Mounting the Switch
•Keep your back straight and lift with your legs, not your back. If you must bend down to lift the
chassis, bend at the knees, not at the waist, to reduce the strain on your lower back muscles.
•Always disconnect all external cables before lifting or moving the chassis.
Required Installation Tools
The following tools and equipment are required to install the chassis:
•Number 1, number 2 Phillips, and 3/16-inch flat-blade screwdriver
•Antistatic mat or antistatic foam
•Your own ESD grounding strap or the disposable ESD strap included with the system
The following tools and equipment are required to install the chassis in a rack:
•Rack-mount kit
•Tape measure and level
Rack-Mounting the Catalyst 4900M Switch
Follow these steps to install the Catalyst 4900M switch in a four-post rack.
Step 1Prepare for installation:
a.Place the chassis on the floor or on a sturdy table as close as possible to the rack. Leave enough
clearance to allow you to move around the chassis.
b.Use a tape measure to measure the depth of the rack. Measure from the outside of the front mounting
posts to the outside of the rear mounting strip. The four-post rack depth must be at least 19.25 inches
(48.9 cm) but not more than 32.5 inches (82.5 cm). If the 4-post rack depth is greater than
32.5 inches (82.5 cm), order and use the optional rack-mount kit (C4900M-BKTS-KIT=).
c.Measure the space between the inner edges of the left front and right front mounting posts to ensure
that it is 17.75 inches (45.09 cm) wide. (The chassis is 17.5 inches [44.5 cm] wide and must fit
between the mounting posts.)
d.Open the standard rack-mount kit, and refer to Table 3-1 to verify that all parts are included.
Table 3-1Standard Rack-Mount Kit Checklist
QuantityPart Description Received
1Left mounting bracket
1Right mounting bracket
2Rear mounting brackets
12 M4 Phillips Flat-head screws
812-24 x 3/4-inch Phillips binder-head screws
810-32 x 3/4-inch Phillips binder-head screws